US20100064672A1 - Exchange gas heat exchanger - Google Patents
Exchange gas heat exchanger Download PDFInfo
- Publication number
- US20100064672A1 US20100064672A1 US11/922,269 US92226906A US2010064672A1 US 20100064672 A1 US20100064672 A1 US 20100064672A1 US 92226906 A US92226906 A US 92226906A US 2010064672 A1 US2010064672 A1 US 2010064672A1
- Authority
- US
- United States
- Prior art keywords
- heat
- pressure
- exchanger
- enclosure
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 13
- 239000004020 conductor Substances 0.000 abstract description 3
- 230000000717 retained effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 102000011842 Serrate-Jagged Proteins Human genes 0.000 description 2
- 108010036039 Serrate-Jagged Proteins Proteins 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
Definitions
- This invention relates to improvements in the art of heat-exchanger design and in particular to a heat-exchanger suitable for use in conjunction with an internal-combustion engine.
- Heat-to-work energy transformations cannot be performed with 100% efficiency due to physical phenomena characterised by the thermodynamic laws.
- the work output is often approximately 30% of the energy released as heat by the combustion of the fuel.
- a similar amount of energy is lost as heat in the exhaust-gases expelled from an engine.
- the balance of the combustion-heat energy is lost to cooling water and to mechanical losses etc.
- One method that can be used is to pass the hot exhaust-gases through a heat-exchanger through which a working-fluid, typically water, is pumped.
- a working-fluid typically water
- the water can be evaporated into steam at a pressure sufficient to do mechanical work in an expansion engine.
- The, nett, work done by the steam is then additional to the work output of the prime-mover so that an overall increase in efficiency is effected.
- Heat-exchanger embodiments can be realised as various arrangements of tube and/or plate elements in differing proportion; the working elements of some heat-exchangers being derived entirely from tube, others being derived entirely from plate.
- Normally heat-exchanger design choices are dominated by the type of thermo-fluids involved, their temperature, state and working pressures. It is usual to choose circular-sectioned tubing for high-pressure applications because of its ready suitability to pressure containment. Plate-type heat-exchangers are considered amongst the most efficient of the heat-exchanger types.
- thermo-fluids can be disposed at very small distances from the heat-exchanging surfaces.
- This second feature is particularly relevant to effective heat-transfer by conduction. Plate-type heat-exchangers are normally considered to be suitable for low-pressure operation.
- Conductive heat-transfer is a desirable feature of a heat-exchanger required to operate over a range of exhaust-gas, volume-flows (because fluid velocity is then not a performance factor) and therefore the efficiency of a heat-exchanger with this feature will not be reduced by fluid-dynamic effects at low engine speeds.
- a heat-exchanger consists of a series of closely-spaced, essentially planar, pressure-elements arranged normally to the major axis of an enclosure.
- Each pressure-element comprises a laminated plate-pair, at least one of which plates has a surface formed so as to provide a plurality of narrow, ribbon-like cavities, between the plate-pairs, through each of which cavities a working fluid can flow in the manner of a thin film.
- Each laminated plate-pair is joined around the common perimeter by welding, brazing or other suitable method, to produce a pressure-tight envelope having fluid inlet and outlet ports formed at suitable locations on the perimeter.
- heat-conductor plates of corrugated, deeply serrate, profile, are located, to provide a series of narrow, approximately triangular-sectioned channels, distributed across each pressure-element, through which hot exhaust-gases can be directed, to form a counter-flow with that of the pressure-element internal working fluid.
- the peaks of successive corrugations engage with linear recess-features present in one or both of the pressure-element plates that bound the space between successive pressure-elements, such linear-recess features being associated with the multiple narrow channels provided within each pressure-element envelope.
- each corrugated conductor-plate is disposed predominantly in the direction of the major axis of the heat-exchanger enclosure, to provide a series of compressive load-paths between adjacent pressure-elements, distributed evenly across the plane of each pressure-element.
- the conductor-plate material is given a thickness sufficient to realise a safe working stress, for the material operating conditions, and to prevent compressive buckling of the corrugated surfaces extending between adjacent pressure-elements, so as to enable the corrugated plates to react loading applied normally to the plane of each pressure-element by the internal working-pressure.
- the complete assembly of pressure-elements and heat-conducting plates is contained, in the direction of the major axis of the enclosure, within end-plates retained by the body of the heat-exchanger-enclosure acting structurally, as a tension member, in reaction to the internal working pressure of the pressure elements.
- the end plates can be restrained by attached tie rods, bars or similar means, so that the complete pressure-element assembly is structurally independent of the heat-exchanger enclosure.
- FIG. 1 shows four aspects of the outside of a heat-exchanger and indicates the locations of horizontal section A-A and transverse section B-B.
- FIG. 2 shows horizontal section A-A
- FIG. 3 shows transverse section B-B, taken through the plane of a single pressure-element revealing a view of the inside surface.
- FIGS. 4( a ) and 4 ( b ) show, part, sectional views of pressure-element embodiments.
- FIG. 5 shows a transverse section through a heat-exchanger system of two serially connected heat-exchangers and an intervening exhaust-gas catalyst.
- a heat-exchanger 1 has a plurality of pressure-elements 11 , each pressure-element consisting of two plates 12 laminated by joining around their common perimeter 13 .
- Pressure-elements 11 have cavities 14 provided within by the surface features 15 in plates 12 .
- Inlet ports 16 and outlet ports 17 are situated at suitable locations on perimeter 13 .
- Inlet passage 18 and outlet passage 19 are provided for the transport of working fluid into and out of the pressure-element 11 series.
- Corrugated plates 20 are located between subsequent pressure-elements 11 so that the peaks 21 of corrugated plates 20 engage with surface features 15 .
- Ports 22 are arranged to admit exhaust gases into enclosure 23 .
- Port 24 is arranged to conduct exhaust gases from enclosure 23 .
- Ceramic insulators 25 intervene between the assembly of pressure-elements 11 and corrugated plates 20 and retaining end-plates 26 .
- Thermal insulation 27 externally encloses heat-exchanger enclosure 23 .
- FIG. 4( a ) there is disclosed at large scale, a part, sectional, detail of two successive pressure-elements 11 in a series, in which both laminated plates 12 , of each pressure-element, possess surface feature 15 , for the engagement of peaks 21 of each corrugated plate 20 .
- FIG. 4( b ) discloses at large scale, a part, sectional, detail of three successive pressure-elements 11 in a series, in which one only of the laminated plates 12 , of each pressure-element, possess surface feature 15 . Either arrangement shown is structurally feasible, but the embodiment of FIG. 4( a ) is preferred because of the better integration of parts, for superior structural integrity and for superior thermal conductivity.
- a heat-exchanger system 2 comprising two heat-exchangers 1 , combined within a common enclosure 23 , with serial, working-fluid, connection 28 .
- Exhaust-gas catalyst 29 is located between heat-exchangers 1 , so that exhaust-gases passing through enclosure 23 , via ports 22 , are directed through the first encountered heat-exchanger 1 , then through the exhaust-gas catalyst 29 , subsequently passing through the second encountered heat-exchanger 1 , finally, to be conducted from enclosure 23 via port 24 .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A heat-exchanger (1) consists of a series of closely-spaced, essentially planar, pressure elements (11). Each pressure-element comprises a laminated plate-pair having surfaces formed to provide a plurality of ribbon like cavities between the plates, through which a working fluid can flow. Each plate-pair is joined around the common perimeter to produce a pressure-tight envelope having fluid-inlet and outlet ports at suitable locations. Between adjoining pressure-elements, heat-conductor plates (20) of corrugated profile are located; providing a series of narrow, approximately triangular-sectioned channels, distributed across each pressure-element, through which hot exhaust-gases can form a counter-flow with that of the pressure-element working fluid. The heat-conductor plates are engineered to react pressure-loading from the pressure-elements. The complete assembly of pressure-elements and heat-conducting plates is contained, in the direction of the major axis of the enclosure (23), between end-plates (25) retained by the body of the enclosure; by tie-rods, bars, or similar means.
Description
- This invention relates to improvements in the art of heat-exchanger design and in particular to a heat-exchanger suitable for use in conjunction with an internal-combustion engine.
- Heat-to-work energy transformations cannot be performed with 100% efficiency due to physical phenomena characterised by the thermodynamic laws. In the case of the internal-combustion engine, the work output is often approximately 30% of the energy released as heat by the combustion of the fuel. Typically, a similar amount of energy is lost as heat in the exhaust-gases expelled from an engine. The balance of the combustion-heat energy is lost to cooling water and to mechanical losses etc.
- It is desirable to recover exhaust-gas heat-energy for the purpose of doing work, so that the overall efficiency of the prime-mover in question is increased. One method that can be used is to pass the hot exhaust-gases through a heat-exchanger through which a working-fluid, typically water, is pumped. In a suitable heat-exchanger, the water can be evaporated into steam at a pressure sufficient to do mechanical work in an expansion engine. The, nett, work done by the steam is then additional to the work output of the prime-mover so that an overall increase in efficiency is effected.
- Heat-exchanger embodiments can be realised as various arrangements of tube and/or plate elements in differing proportion; the working elements of some heat-exchangers being derived entirely from tube, others being derived entirely from plate. Normally heat-exchanger design choices are dominated by the type of thermo-fluids involved, their temperature, state and working pressures. It is usual to choose circular-sectioned tubing for high-pressure applications because of its ready suitability to pressure containment. Plate-type heat-exchangers are considered amongst the most efficient of the heat-exchanger types. This is because of two design features; firstly the large surface area that the type can realise for heat-transfer and secondly, because the mass of the working thermo-fluids can be disposed at very small distances from the heat-exchanging surfaces. This second feature is particularly relevant to effective heat-transfer by conduction. Plate-type heat-exchangers are normally considered to be suitable for low-pressure operation.
- Many internal-combustion engine applications require operation at a wide range of engine speeds and throttle openings. An ideally matched exhaust heat-recovery system would demonstrate a high efficiency over the same, wide, operating-range so that the cost-effectiveness of the system was not compromised by partial inefficiencies. The degree of convective heat-transfer, with a heat-exchanger, is dependant on the strength of the circulation of the thermo-fluids involved and therefore heat-exchangers which are strongly dependant, by design, on convective heat-transfer are subject to degraded performance at reduced thermo-fluid-velocities. Since a prime-mover operating at reduced speed and/or partial throttle opening will provide reduced exhaust-gas volume-flow, the internal fluid-velocities of an associated heat-exchanger will fall proportionally and provide lower heat-transfer efficiencies as a result. Conductive heat-transfer is a desirable feature of a heat-exchanger required to operate over a range of exhaust-gas, volume-flows (because fluid velocity is then not a performance factor) and therefore the efficiency of a heat-exchanger with this feature will not be reduced by fluid-dynamic effects at low engine speeds.
- It is the object of the present invention to provide a plate-type heat exchanger which can operate at moderately high operating pressures and at high efficiency over a wide range of working-fluid mass-flows.
- A heat-exchanger consists of a series of closely-spaced, essentially planar, pressure-elements arranged normally to the major axis of an enclosure. Each pressure-element comprises a laminated plate-pair, at least one of which plates has a surface formed so as to provide a plurality of narrow, ribbon-like cavities, between the plate-pairs, through each of which cavities a working fluid can flow in the manner of a thin film. Each laminated plate-pair is joined around the common perimeter by welding, brazing or other suitable method, to produce a pressure-tight envelope having fluid inlet and outlet ports formed at suitable locations on the perimeter. In the spaces between adjoining pressure-elements, heat-conductor plates, of corrugated, deeply serrate, profile, are located, to provide a series of narrow, approximately triangular-sectioned channels, distributed across each pressure-element, through which hot exhaust-gases can be directed, to form a counter-flow with that of the pressure-element internal working fluid. The peaks of successive corrugations engage with linear recess-features present in one or both of the pressure-element plates that bound the space between successive pressure-elements, such linear-recess features being associated with the multiple narrow channels provided within each pressure-element envelope. The material of each corrugated conductor-plate is disposed predominantly in the direction of the major axis of the heat-exchanger enclosure, to provide a series of compressive load-paths between adjacent pressure-elements, distributed evenly across the plane of each pressure-element. The conductor-plate material is given a thickness sufficient to realise a safe working stress, for the material operating conditions, and to prevent compressive buckling of the corrugated surfaces extending between adjacent pressure-elements, so as to enable the corrugated plates to react loading applied normally to the plane of each pressure-element by the internal working-pressure. The complete assembly of pressure-elements and heat-conducting plates is contained, in the direction of the major axis of the enclosure, within end-plates retained by the body of the heat-exchanger-enclosure acting structurally, as a tension member, in reaction to the internal working pressure of the pressure elements. Alternatively, the end plates can be restrained by attached tie rods, bars or similar means, so that the complete pressure-element assembly is structurally independent of the heat-exchanger enclosure.
- A specific embodiment of the invention is further described by way of example and with the assistance of the accompanying drawings in which;
-
FIG. 1 shows four aspects of the outside of a heat-exchanger and indicates the locations of horizontal section A-A and transverse section B-B. -
FIG. 2 shows horizontal section A-A -
FIG. 3 shows transverse section B-B, taken through the plane of a single pressure-element revealing a view of the inside surface. -
FIGS. 4( a) and 4(b) show, part, sectional views of pressure-element embodiments. -
FIG. 5 shows a transverse section through a heat-exchanger system of two serially connected heat-exchangers and an intervening exhaust-gas catalyst. - With reference to
FIGS. 1 , 2, 3, 4(a) and 4(b): - A heat-
exchanger 1 has a plurality of pressure-elements 11, each pressure-element consisting of twoplates 12 laminated by joining around theircommon perimeter 13. Pressure-elements 11 havecavities 14 provided within by the surface features 15 inplates 12.Inlet ports 16 andoutlet ports 17 are situated at suitable locations onperimeter 13.Inlet passage 18 andoutlet passage 19 are provided for the transport of working fluid into and out of the pressure-element 11 series.Corrugated plates 20, of serrate profile, are located between subsequent pressure-elements 11 so that thepeaks 21 ofcorrugated plates 20 engage withsurface features 15.Ports 22 are arranged to admit exhaust gases intoenclosure 23.Port 24 is arranged to conduct exhaust gases fromenclosure 23.Ceramic insulators 25 intervene between the assembly of pressure-elements 11 andcorrugated plates 20 and retaining end-plates 26.Thermal insulation 27 externally encloses heat-exchanger enclosure 23. - Referring to
FIG. 4( a), there is disclosed at large scale, a part, sectional, detail of two successive pressure-elements 11 in a series, in which both laminatedplates 12, of each pressure-element,possess surface feature 15, for the engagement ofpeaks 21 of eachcorrugated plate 20.FIG. 4( b) discloses at large scale, a part, sectional, detail of three successive pressure-elements 11 in a series, in which one only of the laminatedplates 12, of each pressure-element,possess surface feature 15. Either arrangement shown is structurally feasible, but the embodiment ofFIG. 4( a) is preferred because of the better integration of parts, for superior structural integrity and for superior thermal conductivity. - Referring to
FIG. 5 , there is shown a heat-exchanger system 2, comprising two heat-exchangers 1, combined within acommon enclosure 23, with serial, working-fluid,connection 28. Exhaust-gas catalyst 29 is located between heat-exchangers 1, so that exhaust-gases passing throughenclosure 23, viaports 22, are directed through the first encountered heat-exchanger 1, then through the exhaust-gas catalyst 29, subsequently passing through the second encountered heat-exchanger 1, finally, to be conducted fromenclosure 23 viaport 24.
Claims (3)
1) An exhaust gas heat-exchanger, comprising;
A series of substantially planar, heat-transfer pressure-elements, each said pressure-element having planar alignment normal to the major axis of an enclosure and consisting of laminated plate-pairs, joined around a common perimeter; at least one said laminated plate having ribbed surface-features to provide a parallel series of narrow cavities, within each pressure-element, in internal communication with inlet and outlet ports, suitably located on the said perimeter, for the passage of a working fluid;
a series of corrugated plates, of deeply-serrate profile, forming compression-reacting elements, located between successive pressure-elements and engaging with the said ribbed surface-features to provide channels for the passage of exhaust-gas between adjacent pressure-element surfaces;
an enclosure having inlet and outlet ports for the passage of exhaust gas and having structural means to contain the, mutually opposed, working forces from the pressure-vessel series, acting outward in parallel alignment with the said major axis of the enclosure;
means to convey working-fluid from a connection external to the said heat-exchanger enclosure, to the said pressure-vessel inlet ports and means, to convey the heated or evaporated fluid from the said pressure-vessel outlet-ports to a connection external to the heat-exchanger enclosure.
2) A heat-exchanger as in claim 1 , in which the working forces from the pressure-vessel series are contained between end-plates mutually restrained by tie-rod or similar means in which the structural system is independent of the heat-exchanger enclosure.
3) A heat-exchanger system, consisting of two heat-exchangers, as in claims 1 or 2 , in which the said heat-exchangers are combined in the form of a conjoined or common, enclosure, arranged for the passage of heated exhaust-gas, in which the said heat-exchangers are serially connected with respect to the passage of the working-fluid and said heat-exchangers being ordered within the exhaust gas stream so that there is a first, high-temperature, heat-exchanger and a second, lower-temperature, heat-exchanger;
an exhaust-gas catalyst located within the said heat-exchanger system enclosure, between said first heat-exchanger and said second heat-exchanger within the exhaust-gas passage, for the purpose of exhaust-gas purification treatment.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0515058.6 | 2005-07-22 | ||
GB0515058A GB2426322B (en) | 2005-07-22 | 2005-07-22 | Exhaust gas heat exchanger |
PCT/GB2006/002644 WO2007010226A1 (en) | 2005-07-22 | 2006-07-17 | Exhaust gas heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100064672A1 true US20100064672A1 (en) | 2010-03-18 |
Family
ID=34976372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/922,269 Abandoned US20100064672A1 (en) | 2005-07-22 | 2006-07-17 | Exchange gas heat exchanger |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100064672A1 (en) |
GB (1) | GB2426322B (en) |
WO (1) | WO2007010226A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1936310A1 (en) * | 2006-12-23 | 2008-06-25 | Joachim Schult | Compact plate heat exchanger |
EP1936311B1 (en) * | 2006-12-23 | 2013-10-02 | Joachim Schult | Compact plate heat exchanger |
FR2949554B1 (en) * | 2009-08-31 | 2012-08-31 | Valeo Systemes Thermiques | HEAT EXCHANGER |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6595274B2 (en) * | 2001-07-26 | 2003-07-22 | Denso Corporation | Exhaust gas heat exchanger |
US20040040280A1 (en) * | 2002-08-30 | 2004-03-04 | General Electric Company | Heat exchanger for power generation equipment |
US6854263B1 (en) * | 1997-10-22 | 2005-02-15 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Method and device for regulating the temperature range of an NOx accumulator in an exhaust system of an internal combustion engine |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB449884A (en) * | 1935-01-10 | 1936-07-06 | William Joseph Still | Improvements in heat-exchange elements for heating or cooling fluids |
DE1928146A1 (en) * | 1968-06-06 | 1969-12-11 | Delaney Gallay Ltd | Heat exchanger |
US3780800A (en) * | 1972-07-20 | 1973-12-25 | Gen Motors Corp | Regenerator strongback design |
WO1985004217A1 (en) * | 1984-03-15 | 1985-09-26 | Jenbacher Werke Aktiengesellschaft | Exhaust gas catalytic purifier operating as a silencer for internal combustion engines |
JPS62213610A (en) * | 1986-03-13 | 1987-09-19 | Youei Seisakusho:Kk | Combustion type fluid heating device |
DE4026988C2 (en) * | 1990-08-25 | 1999-10-28 | Behr Gmbh & Co | Heat exchanger with a package of flat tubes and corrugated fin units |
DE19510283A1 (en) * | 1995-03-22 | 1996-09-26 | Behr Gmbh & Co | Flat tube for a soldered heat exchanger and process for its manufacture |
JPH10281015A (en) * | 1997-04-02 | 1998-10-20 | Calsonic Corp | Egr gas cooler |
FR2772829B1 (en) * | 1997-12-24 | 2000-03-03 | Valeo Thermique Moteur Sa | CATALYTIC CONTAINER WITH TEMPERATURE MANAGEMENT, ESPECIALLY FOR A MOTOR VEHICLE |
JP3022963B2 (en) * | 1998-04-20 | 2000-03-21 | 東京ラヂエーター製造株式会社 | EGR heat exchanger |
DE19846518B4 (en) * | 1998-10-09 | 2007-09-20 | Modine Manufacturing Co., Racine | Heat exchangers, in particular for gases and liquids |
DE60000493T2 (en) * | 1999-07-30 | 2003-02-20 | Denso Corp | Exhaust gas heat exchanger with gas guide segments arranged at an angle |
DE10061949A1 (en) * | 1999-12-15 | 2001-06-21 | Denso Corp | Internal combustion engine exhaust gas heat exchanger involves exhaust gas recirculation system cooler with core area of several small pipes through which cooling water flows and several ribs between adjacent pipes |
FR2814537B1 (en) * | 2000-09-25 | 2005-09-02 | Valeo Thermique Moteur Sa | HEAT EXCHANGER FOR TWO IMPROVED YIELD FLUIDS |
US20030119616A1 (en) * | 2001-12-20 | 2003-06-26 | Meckstroth Richard J. | Dual friction surface asymmetric damped tensioner |
SE0202747L (en) * | 2002-09-17 | 2004-02-10 | Valeo Engine Cooling Ab | Device at a plate heat exchanger |
-
2005
- 2005-07-22 GB GB0515058A patent/GB2426322B/en not_active Expired - Fee Related
-
2006
- 2006-07-17 US US11/922,269 patent/US20100064672A1/en not_active Abandoned
- 2006-07-17 WO PCT/GB2006/002644 patent/WO2007010226A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6854263B1 (en) * | 1997-10-22 | 2005-02-15 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Method and device for regulating the temperature range of an NOx accumulator in an exhaust system of an internal combustion engine |
US6595274B2 (en) * | 2001-07-26 | 2003-07-22 | Denso Corporation | Exhaust gas heat exchanger |
US20040040280A1 (en) * | 2002-08-30 | 2004-03-04 | General Electric Company | Heat exchanger for power generation equipment |
Also Published As
Publication number | Publication date |
---|---|
WO2007010226A1 (en) | 2007-01-25 |
GB0515058D0 (en) | 2005-08-31 |
GB2426322A (en) | 2006-11-22 |
GB2426322B (en) | 2007-09-05 |
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